A place popularity estimation system for estimating popularity of a facility includes a posted-data acquisition unit configured to acquire posted data posted by a user; a posted-data determination unit configured to determine whether the posted data relates to a facility to be estimated and also indicates that a user who has posted the posted data has visited the facility to be estimated; a counting unit configured to count posted data for the facility to be estimated in accordance with the determination; a number-of-people information acquisition unit configured to acquire number-of-people information indicating the number of people who are located in a mesh including the facility to be estimated; a popularity estimation unit configured to estimate popularity of the facility to be estimated, based on a counted value and the number of people indicated by the number-of-people information; and an output unit configured to output information indicating the estimated popularity.
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